Earth-scraping apparatus.



Patented Aug. 24. 1909 l viiimzssas Patented Aug. 24, 1909.

2 SHEETS-SHEET 2. ,i?

H. G. WARD. EARTH SCRAPING APPARATUS. APPLICATION FILED JULY 29, 1908.

Y I I Witnesses HARRIS G. WARD, 0F VASHON, WASHINGTON.

EARTH-SCRAPING APPARATUS.

Specificationof Letters Patent. Patented Aug. 24, 1909.

Application filed July 29, 1908. Serial No. 445,992.

To all whom it may concern:

Be it known that I, HARRIS G. WARD, a citizen of the United States of America, and a resident of the town of Vashon, in the county of King and State'of Washington, have invented certain new and useful Improvements 5 in Earth-Scraping Apparatus, of which the following is a-specification.

My invention relates to certain improvements in apparatus for scraping and moving eart-h'as hereinafter fully described and defined in the appended claims.

WVit-h reference to the accompanying drawing, wherein like reference numerals designate corresponding parts throughout: F igure 1 is a view in side elevation illustrating a scraping apparatus embodying the features of my invention, at the commencement of the scraping operation. Fig. 2 is a similar view of the scraping machine proper, the positions of the parts as shown being such as when the machine is partly loaded. Fig.

- 8 is a side elevation in partial section illustrating the positions of the parts when the machine is loaded and the operation of ejecting the material about to be effected. Fig. 4: is a plan view in partial section illustrating the machine with the plunger head at the rear of the box. Fig. 5 is a perspective View of the cable catch. Fig. 6 is a fragmentary detail view illustrating the latchin device for the scraping blade, and Figs. and 8 are sectional views taken on lines 7-7 and 8-8 respectively of Fig.6.

The scraper as shown comprises a body portion in the form of a box, as 1, having hinged connection atits open end with a cutting or scraping blade 2.

Slidably fitting in box 1 is a plunger head 3 connected by means of chains 4 with upwardly extending arms 2 of blade 2 for swinging the latterupwardly during the loading operation of the scraper.

In connection with the scraper blade I have provided means for locking the same in cutting and raised positions. The said means comprising latching devices related to head 3 for operation and including bars 6 pivotally connected with respective arms 2 and extending rearwardly through braek ets 7 of box 1. For each bar 6 I provide a spring pressed latch as 8, slidably supported on plns 7 of the adjacent bracket 7 and provided with suitable wipers 9 projecting through slots in the-wall of box 1 into the path of head 3. Each latch 8 is provided is journaled in-a yoke 12 rotatably mounted in the upper portion of a rearward extension 1 of said box and provided with a handle 13 for effecting angular adjustment of wheel 12 to steer the machine. The wheels 11 I have shown journaled on a yoke 11" embracing the forward end portion of box 1 and pivotally connected therewith as at 1 1 for relative swinging movement to lower the box at its forward end. This downward adjustment of the box should be regulated according to the depth of cut to be made and for this purpose I have provided adjustable stops, as 15, on box 1 for engagement with yoke 11 as the box swings downwardly. These stops are in the form of pins adapted to fit in either one of a series of apertures provided in respective plates 15 of box 1.

Reference numeral 16 designates a suitable catch mounted on box" 1 for engagement with yoke 11 when the box is raised.

Bearing on the lunger arms 3 are shoes,

as (SO-provided w1th stem portions projecting from the upper wall of extension 1 for application of the foot of the operator to apply the shoes to retard rearward movement offthe plunger as may be desired to effect a more complete filling of the box when operating in certain kinds of material as for example sand or dry earth.

The arms 3 are connected at the rear ends by a cross bar 3 to which are secured cables 17 leading forwardly about respective guides 18 mounted in the forward portion of extension 1 and thencerearwardly to a haul back cable 17 to which power is applied to operate cables 17' to effect forward movement of the plunger. Pivotally mounted on box 1 are spuds 19 connected by means of chains 20 with respective levers 21 having suitable releasable connection with adjacent quadrants 22 to normally hold the spuds elevated. Should the materials excavated be densely packed in the box levers 21 may be released to permit the spuds to engage in the ground and secure the box from rearward movement when cables 17 are drawn upon to advance the plun er.

Reference numeral 23 esignates a cable for relieving head 3 of cable 17 during the loading operation and also for resetting or raisingithe box from its scraping position. This cable is secured to cable 17 and passes through a suitable catch, as 24 mounted on the rear end of extension 1 and thence through'guides 23 to the forward end of the machine where it is secured to a cable '25 connected with box 1 for advancing the machine.

Secured to cable 23 is a button 24 which normally lies forwardly of catch 24 for engagement therewith to elevate the box from its scraping position by rearward pull exerted on cable 17. Catch 24 is slidably mounted in guides 26 of extension 1, see

advance the plunger in box 1.

Button 24 is preferably tapered at the forward end and catch 24 provided on its rear face with inclined surfaces as 28 for guiding the button upon its return to the enlarged portion 28 of the cable slot.

In operation the plunger head 3 is first moved to the forward end of the box by pulling on cable 17 with button 24 rearwardly of catch 24. This movement of cable 17 will draw cables 23 and 25 rearward as the plunger advances under action of cables 17 and also effect operation of the latches 8 to release bars 6 by engagement of head 3 with wipers 9. Blade 2 will then swing downwardly as permitted by the slack in chains 4 until bars 6 are sufficiently advanced for engagement of the latches 8 'by action of their s rings in the rearward apertures 10 of sai bars. After the plunger head has been advanced a forward pull is exerted on cable 25 thereby drawing cable 17 forwardly to slack cables 17 and passing button 24 through catch 24. Box 1 is then released for lowering movement by disengaging catch 16 from yoke l1 and the scraping operation commenced by drawing on cable 25 which draws upon cable 17 through cable 23 and thereby relieves the lunger. The materials excavated ride up blade 2 into the box and force head 3 rearwardl-y into engagement with wipers 9 to release bars 6 just as chains 4 are drawn taut. Further inward movement of the head will therefore swing blade 2 upwardly and thereby adjust bars 6 inwardly for reengagement with their latches to secure the blade in its raised position.

After the machine is loaded a rearward,

,box clear of the ground to facilitate movement of the machine to where the material is to be deposited. The operation of the machine to eject the materials is effected by first adjusting catch 24 for passage of but ton 24 and then drawing on cable 17 to move head 3 forwardly as heretofore described and thereby crowd the material from box 1 and operate latches 8 to release blade 2.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States of Amer- 1ca,/1s:

1. An earth scraping apparatus comprising a scraper, bearing members on which said scraper is supported for swinging, a draft cable, a rearwardly extending cable having connection to effect swinging of said scraper to elevate the same, and means for holding said scraper elevated.

2. An earth scraping apparatus comprising a scraper, a draft cable connected thereto, means supporting said scraper for ver- !tical adjustment, a rearwardly extending cable connected to said draft cable, means for connecting said last named cable with said scraper whereby the pulling rearwardly of said cable will effect the elevation of said elevated.

3. An earth scraping apparatus comp'rising a scraper, a draft cable connected thereto, a plunger supported for movement in said scraper, means on which said scraper is supported for vertical adjustment, means for holding said scraper in elevated position, and means for operating said plunger to discharge material from said scraper.

4. An earth scraping apparatus comprising a scraper, means on which said scraper is supported for vertical adjustment, means for holding said scraper in elevated position, a draft cable connected to said scraper, a plunger slidably supported in said scraper, a cable connected to said plunger for operating the same'to discharge material from said scraper and means for elevating said scraper connected to said last named cable to be operated thereby.

5. An earth scraping apparatus comprising a scraper, means onwhich said scraper is supported for vertical adjustment, means for holding's'aid scraper in elevated position,

a draft cable connected to said'scraper, a plunger slidably supported in said scraper, a cable connected to said plunger for operating the same to discharge material from said scrape-r, a cable connected to said draft cable and to said second named cable, means whereby said last named cable is connected with said scraper to elevate the same.

6. An earth scraping apparatus comprising a scraper, means on which said scraper is supported for vertical adjustment, means for holding said scraper in elevated position, a draft cable connected to said scraper, a plunger slidably supported in said scraper,

' erecl position against swinging in both upseams a cable connected to said plunger for operating the same to discharge material from said scraper, a cable connected to said draft cable and to said second named cable, said last named cable being so connected with said second named cable that ower applied to the latter will move the f drmer before operating said plunger, a catch on said scraper, and means on said last named cable for engagement with said catch to connect said scraper for movement with said cable.

7. A scraping apparatus comprising a scraper, supportin wheels therefor, means in said scraper or discharging material therefrom, and means forengagement with the earth for holding said scraper against backward movement supported on said scraper for upward movement.

8. A scraping apparatus comprising a scraper, supporting wheels therefor, means in said scraper for discharging material therefrom, and members pivoted to said scraper for downward movement adapted to engage in the earth and prevent backward movement of said scraper during unloading thereof.

9. A scraping apparatus comprising a scraper consisting of an open body portion and a forwardly disposed scraping memberhinged for vertical swinging, means to swing sa1d scraping member upwardly, and means for locking sa1d scrapingmember 1n its lowward and downward directions. 0

10. A scraping. apparatus comprising a scraper consisting 0 an open body portion and a forwardly disposed scraping member supported for upward movement, a plunger slidably supported in said body portion and connected to said scraping member to raise the same, means to operate said plunger,

'means to lock said scraping member 1n its elevated position, including a rigid connecting means and a latch engaged therewith and means operated b said plunger to re.- lease the latch of said ocking means.

11. A scraping apparatus comprising a scraper consisting of an open body portion and a forwardly disposed scraping member supported for upward movement, a plunger slidably supported in said body portion and connected to said scraping member to raise the same, means to operate said plunger, means to lock said scra ing member in both its raised and lowered movement in either direction and means operated by and during movement of sa1d plunger for actuating said locking means to release said scraping member.

12. A scraping apparatus comprising a scraper consisting of an open body portion and aforwardly disposed scraping member supported for upward movement,-a plunger slidably supported insaid body ortlon and connected to said scraping mem er to raise ositions, against the same, means to operate said plunger, means to lock said scraping member in its lowered position, against movement in either direction and means operated by said plunger during inward movement thereof to actuate said locking means to release said scraping member.

13-. A scraping a scraper consisting 0 an open body portion and a scraping member pivotally supported at the forward .end thereof for vertical swinging, a plunger mounted for reciprocation in said body portion, a connection between said plunger and said scraping member whereby said scraping member will be swung upwardly during rearward movement of said plunger, an arm connected with said scraping member, aeatch on said body por-' tion for holding said arm and thereby preventing movement of said scraping member, and means operated by and during movement of said plunger for actuating said catch to release sa1d arm.

14. A scraping apparatus comprising a scraper cons sting of an open body, a hearing member holding the rear portion of said scraper elevated, bearing members for sup porting the forward end portion of said scraper, and means carrying said last named bearing members, said means being pivoted paratus comprising a to said scra'per for swinging, whereby to per? mit of lowering of the forward end portion of said scraper.

15. A scraping apparatus comprising a scraper consisting of an open body, bearing .means on which said scraper is supported for vertical swinging, means to swing said scraper to raise and lower the forward end thereof, bearing members at the forward end portions of said scraper, means carrying said bearing members, sa1d last means being pivoted to said scraper for vertical swinging,- and means .for holding saidlast means as adjusted.

16. An earth scra ing apparatus comprising a scraper, a dra t cable connected thereto, a plunger movable in the scraper by the materlals as loaded, a cable connected with said plunger to operate the same, and means for connecting said draft. cable to said last cable to relieve the plunger thereof in load! ing a scraper, a draft cable connected. there-' with, aplunger movable in said scra er to ward and from its active end, a ban back cable connected with said plunger to advance advance the plun er, and flexible means c011- tlie same, and flexible means connecting said nectin said cab es for drawing one .cable cables for drawing one cable toward the towar the scraper by draft on the other.

scraper by draft on the other. Signed at Seattle, Washington, this 18 5 19. An earth scra ing apparatus comprisday of July, 1908.

ing a scraper a dra t cable connected therev with, a plung er in said scraper, a haul back HARRIS WARD cable, a guide means on the scraper, flexible W tnesses: means connected with said plunger and haul F. C. BLoxoM, 10 back cable and engaging sald gnlde means to S. LARSEN. 

